/**
  ******************************************************************************
  * File Name          : weight.c
  * Description        : Code for freertos applications
  ******************************************************************************
  * @attention
  *
  ******************************************************************************
  */

/* Includes ------------------------------------------------------------------*/
#include "route_base.h"
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>

static const uint16_t crc16_modebus[256] =
{
  0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
  0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
  0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
  0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
  0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
  0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
  0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
  0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
  0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
  0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
  0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
  0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
  0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
  0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
  0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
  0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
  0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
  0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
  0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
  0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
  0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
  0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
  0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
  0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
  0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
  0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
  0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
  0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
  0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
  0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
  0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
  0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
};

uint16_t crc16(const uint8_t *buf, uint32_t len)
{
  uint16_t crc = 0xffffu;
  uint32_t i;
  
  for(i=0; i<len; i++)
  {
    crc = (crc >> 8) ^ crc16_modebus[(crc ^ buf[i]) & 0xffu];
  }
  
  return crc;
}

uint8_t Route_PayloadCRC(Route_PayloadType *rtpl, uint8_t type)
{
	uint16_t crc;
  uint16_t i;
	
	crc = 0xffffu;
  
  for(i=0; i<6; i++)
  {
    crc = (crc >> 8) ^ crc16_modebus[(crc ^ ((uint8_t *)rtpl)[i]) & 0xffu];
  }
  
  for(i=0; i<rtpl->pl_len; i++)
  {
    crc = (crc >> 8) ^ crc16_modebus[(crc ^ rtpl->payload[i]) & 0xffu];
  }
  
  if(type == ROUTE_PLCRC_WRITE)
  {
    rtpl->crc16 = crc;
    return 0;
  }
  else  /* type == ROUTE_PLCRC_CHECK */
  {
    if(rtpl->crc16 == crc)
    {
      return 0;
    }
    else
    {
      return 1;
    }
  }
}

Route_DevType_Type Route_DidToType(const char* did)
{
  if(did[0] == 'H')
  {
    if(did[1] == 'Z')           /* ?? */
    {
      return RT_DV_GW;
    }
    
    if(did[1] == 'K')           /* ?? */
    {
      return RT_DV_HK;
    }
  }

  if((did[0] == 'L') && (did[1] == 'X'))
  {
    return RT_DV_LX;
  }

  if((did[0] == 'X') && (did[1] == 'C'))
  {
    return RT_DV_XC;
  }

  if((did[0] == 'C') && (did[1] == 'F'))
  {
    return RT_DV_CF;
  }

  if((did[0] == 'D') && (did[1] == 'K'))
  {
    return RT_DV_DK;
  }
  
  if((did[0] == 'Z') && (did[1] == 'L'))
  {
    return RT_DV_ZL;
  }
  
  if(did[0] == 'S')
  {
    if(did[1] == 'D')           /* ?? */
    {
      return RT_DV_SD;
    }
    
    if(did[1] == 'W')           /* ?? */
    {
      return RT_DV_SW;
    }
    
    if(did[1] == 'P')           /* ?? */
    {
      return RT_DV_SP;
    }
  }
  
  return RT_DV_UN;
}

uint8_t Route_ParseDID(const char *did, Route_DidFormatType *did_format)
{
	char temp[4];
	Route_DevType_Type tp;
	uint8_t y, m;
	uint8_t di;
	int seq;
	
	if(strlen(did) != ROUTE_DID_STRLEN)
	{
		return 1;
	}
	
	tp = Route_DidToType(did);
	if(tp == 0)
	{
		return 2;
	}

#if(ROUTE_VERSION == 50)
  if(tp == RT_DV_GW)
  {
    if(did[2] != '5')
    {
      return 6;
    }
  }
#endif
  
#if(ROUTE_VERSION == 60)
  if(tp == RT_DV_GW)
  {
    if(did[2] != '6')
    {
      return 6;
    }
  }
#endif

#if(ROUTE_VERSION == 70)
  if(tp == RT_DV_GW)
  {
    if(did[2] != '7')
    {
      return 6;
    }
  }
#endif

#if(ROUTE_VERSION == 80)
  if(tp == RT_DV_GW)
  {
    if(did[2] != '8')
    {
      return 6;
    }
  }
#endif

	if((did[3]>='0') && (did[3]<='9'))
	{
		di = did[3] - '0';
	}
	else if((did[3]>='A') && (did[3]<='F'))
	{
		di = did[3] - 'A' + 10;
	}
	else
	{
		return 7;
	}
	
	/* year */
	temp[0] = did[4];
	temp[1] = did[5];
	temp[2] = 0;
	y = atoi(temp);
	if((y < 20) || (y > 99))
	{
		return 3;
	}
	
	/* month */
	temp[0] = did[6];
	temp[1] = did[7];
	temp[2] = 0;
	m = atoi(temp);
	if((m < 1) || (m > 12))
	{
		return 4;
	}
	
	/* shipment count */
	seq = atoi(did+8);
	if((seq < 1) || (seq > 99999))
	{
		return 5;
	}
	
	if(did_format != NULL)
	{
		did_format->year  = y;
		did_format->month = m;
		did_format->sequence = seq;
		did_format->type = tp;
		did_format->devindex = di;
	}
	
	return 0;
}
